1147664660 has 12 divisors (see below), whose sum is σ = 2410095828. Its totient is φ = 459065856.

The previous prime is 1147664633. The next prime is 1147664723. The reversal of 1147664660 is 664667411.

It can be written as a sum of positive squares in 2 ways, for example, as 548590084 + 599074576 = 23422^2 + 24476^2 .

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28691597 + ... + 28691636.

It is an arithmetic number, because the mean of its divisors is an integer number (200841319).

Almost surely, 2^1147664660 is an apocalyptic number.

1147664660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1147664660 is an abundant number, since it is smaller than the sum of its proper divisors (1262431168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1147664660 is a wasteful number, since it uses less digits than its factorization.

1147664660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57383242 (or 57383240 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 1147664660 is about 33877.1997071777. The cubic root of 1147664660 is about 1046.9798808830.

The spelling of 1147664660 in words is "one billion, one hundred forty-seven million, six hundred sixty-four thousand, six hundred sixty".